Results 31 to 40 of about 232,484 (246)

Dynamic Mechanical Compression of Chondrocytes for Tissue Engineering: A Critical Review

open access: yesFrontiers in Bioengineering and Biotechnology, 2017
Articular cartilage functions to transmit and translate loads. In a classical structure–function relationship, the tissue resides in a dynamic mechanical environment that drives the formation of a highly organized tissue architecture suited to its ...
Devon E. Anderson, Brian Johnstone
doaj   +1 more source

Crackling Dynamics in the Mechanical Response of Knitted Fabrics [PDF]

open access: yesPhysical Review Letters, 2018
Crackling noise, which occurs in a wide range of situations, is characterized by discrete events of various sizes, often correlated in the form of avalanches. We report experimental evidence that the mechanical response of a knitted fabric displays such broadly distributed events both in the force signal and in the deformation field, with statistics ...
Poincloux, Samuel   +2 more
openaire   +3 more sources

Performance Analysis of a Travelling-Wave Ultrasonic Motor under Impact Load

open access: yesMicromachines, 2020
With the increased application of ultrasonic motors, it is necessary to put forward higher demand for the adaptability to environment. Impact, as a type of extreme environment, is widespread in weapon systems, machinery and aerospace.
Jiahan Huang, Dong Sun
doaj   +1 more source

Mechanical response of cardiovascular stents under vascular dynamic bending [PDF]

open access: yesBioMedical Engineering OnLine, 2016
Currently, the effect of vascular dynamic bending (VDB) has not been fully considered when studying cardiovascular stents' long-term mechanical properties, as the previous studies about stent's mechanical properties mostly focus on the effect of vascular pulsation (VP).
Xu, Jiang   +5 more
openaire   +2 more sources

Dynamic mechanical performance of FeNiCoAl-based high-entropy alloy: Enhancement via microbands and martensitic transformation

open access: yesMaterials Today Advances, 2023
The non-equiatomic FeNiCoAlTaB high-entropy alloy exhibits outstanding quasi-static mechanical properties. Here, we investigate the microstructural evolution and mechanical response of this alloy subjected to dynamic loading, which has not been done ...
Aomin Huang   +8 more
doaj   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Statistical fluid mechanics: Dynamics equations and linear response theory

open access: yesPhysics of Fluids, 2023
The statistical nature of discrete fluid molecules with random thermal motion so far has not been considered in mainstream fluid mechanics based on Navier–Stokes equations, wherein fluids have been treated as a continuum breaking into many macroscopically infinitely small (but microscopically large enough) mass elements with their motion only ...
openaire   +2 more sources

Dynamic Responses of the Planetary Gear Mechanism Considering Dynamic Wear Effects

open access: yesLubricants, 2023
Gear wear is unavoidable and results in vibrations and decreased performance in a planetary gear system. In this work, the wear phenomenon of the gear teeth surface and the dynamic responses of the planetary gear mechanism are investigated through a computational methodology.
Zhengfeng Bai, Zhiyuan Ning
openaire   +2 more sources

Mapping the evolution of mitochondrial complex I through structural variation

open access: yesFEBS Letters, EarlyView.
Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin   +2 more
wiley   +1 more source

Loading-Induced Heat-Shock Response in Bovine Intervertebral Disc Organ Culture. [PDF]

open access: yesPLoS ONE, 2016
Mechanical loading has been shown to affect cell viability and matrix maintenance in the intervertebral disc (IVD) but there is no investigation on how cells survive mechanical stress and whether the IVD cells perceive mechanical loading as stress and ...
Wai Hon Chooi   +3 more
doaj   +1 more source

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